Temperature control type device for detecting grain water contents

Abstract

The invention relates to a temperature control type device for detecting water contents of grains. The device is composed of an outer barrel (1), an inner barrel (2), a heating net (3), a water content sensor (4), a temperature sensor (5) and a temperature controller (6). The inner barrel (2) is installed in the outer barrel (1), air is reserved between walls of the inner barrel (2) and the outer barrel (1), the heating net (3) is installed on the outer wall of the inner barrel (2), the water content sensor (4) is installed at the center of the inner barrel (2), the temperature sensor (5) is installed between interlayers of the inner barrel (2) and the outer barrel (1), and the heating net (3), the water content sensor (4) and the temperature sensor (5) are respectively connected to the temperature controller (6). Grains to be detected are placed in the inner barrel (2), and the inner barrel (2) and the outer barrel (1) can be sealed through upper cover plates. Temperatures of the inner barrel (2) can be controlled by the temperature controller (6), and the water contents of the grains are detected by the water content sensor (4) and displayed by the temperature controller (6).

Description

technical field [0001] The grain moisture detection device belongs to the fields of sensing technology, electronic technology, single-chip microcomputer technology, electromechanical technology and the like. Background technique [0002] The detection of moisture content of grain is of great significance to the transportation, storage and processing of grain, and the level of moisture content has a great impact on storage time and grain quality. At present, there are infrared method, microwave method, neutron method, nuclear magnetic resonance method, etc. to detect the moisture content of grain. The above methods are technically difficult and slow in measurement speed, so they are not easy to popularize. Resistance method, radio frequency impedance method and capacitance method are relatively simple in principle, but are affected by temperature. The invention mainly designs a temperature-controllable capacitive grain water content detection device, which is used to calibra...

AI Technical Summary

Problems solved by technology

At present, the methods for detecting the moisture content of grains include infrared method, microwave method, neutron method, nuclear magnetic resonance method, etc. The above methods are technically difficult and slow in measurement speed, so they are not easy to popularize

Resistance method, radio frequency impedance method and capacitance method are relatively simple in principle, but are affected by temperature

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